211117494 has 32 divisors (see below), whose sum is σ = 483033600. Its totient is φ = 60259392.

The previous prime is 211117481. The next prime is 211117507. The reversal of 211117494 is 494711112.

It is an interprime number because it is at equal distance from previous prime (211117481) and next prime (211117507).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56962 + ... + 60554.

It is an arithmetic number, because the mean of its divisors is an integer number (15094800).

Almost surely, 2^211117494 is an apocalyptic number.

211117494 is an abundant number, since it is smaller than the sum of its proper divisors (271916106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211117494 is a wasteful number, since it uses less digits than its factorization.

211117494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004.

The product of its digits is 2016, while the sum is 30.

The square root of 211117494 is about 14529.8827937461. The cubic root of 211117494 is about 595.4446634860. Note that the first 3 decimals are identical.

The spelling of 211117494 in words is "two hundred eleven million, one hundred seventeen thousand, four hundred ninety-four".